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Genetic dissection of photosynthetic efficiency traits for enhancing seed yield in chickpea

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Title Genetic dissection of photosynthetic efficiency traits for enhancing seed yield in chickpea
 
Creator Basu, Udita
Bajaj, Deepak
Sharma, Akash
Malik, Naveen
Daware, Anurag
Narnoliya, Laxmi
Thakro, Virevol
Upadhyaya, Hari D.
Kumar, Rajendra
Tripathi, Shailesh
Bharadwaj, Chellapilla
Tyagi, Akhilesh K.
Parida, Swarup K.
 
Subject chickpea
GWAS
QTL
photosynthesis
SNP
yield
 
Description Accepted date: 3 April 2018
Understanding the genetic basis of photosynthetic efficiency (PE) contributing to enhanced seed yield per plant (SYP) is vital for genomics-assisted crop improvement of chickpea. The current study employed an integrated genomic strategy involving photosynthesis pathway gene-based association mapping, genome-wide association study, QTL mapping and expression profiling. This identified 16 potential SNP loci linked to major QTLs underlying 16 candidate genes significantly associated with PE and SYP traits in chickpea. The allelic variants were tightly linked to positively interacting QTLs regulating both enhanced PE and SYP traits as exemplified by a chlorophyll A-B binding protein-coding gene. The leaf tissue-specific pronounced up-regulated expression of 16 associated genes in germplasm accessions and homozygous individuals of mapping population was evident. Such combinatorial genomic strategy coupled with gene haplotype-specific association as well as in silico protein-protein interaction study delineated natural alleles and superior haplotypes from a chlorophyll A-B binding protein-coding gene and its interacting gene, Timing of CAB Expression 1, which appear to be most-promising candidates in modulating chickpea PE and SYP traits. These functionally pertinent molecular signatures identified have efficacy to drive marker-assisted selection for developing PE-enriched cultivars with high seed yield in chickpea.
The financial support provided by the Department of Biotechnology (DBT), Ministry of
Science and Technology, Government of India, is acknowledged.
 
Date 2018-04-23T10:35:35Z
2018-04-23T10:35:35Z
2019
 
Type Article
 
Identifier Plant, Cell & Environment, 42(1): 158-173
1365-3040
http://223.31.159.10:8080/jspui/handle/123456789/852
https://onlinelibrary.wiley.com/doi/abs/10.1111/pce.13319
https://doi.org/10.1111/pce.13319
 
Language en_US
 
Format application/pdf
 
Publisher John Wiley & Sons